My Hyundai Tucson 2013's fog light is not working. Also a bulb in cabin which is supposed to stay steady is blinking. I suspect this could be because of the voltage drops and electrical faults.
I inspected the harness and it loos quite old. Where can I get a good quality wiring harness? How should I determine if it is good? Which video or guide should I follow to replace it?
PS: I am an amateur mechanic. Have changed many components myself.